The following words take on exclusive meanings as used in this paragraph of this rule only.
"Company." Any individual, sole proprietorship, partnership, association, or corporation certified pursuant to this rule.
"Provisional individual." Any person enrolled in a bona fide apprenticeship training program registered with the apprenticeship council pursuant to section 4139.08 of the Revised Code or with the bureau of apprenticeship and training of the United States department of labor.